Quiz about F2 Math 1st midterm revision

Question 1

$$4a^2b+6ab^2-2a$$

Accepted Answer

$$2a\left(2ab+3b^2-1\right)$$

Answer

$$2a\left(2ab+3b^2\right)$$

Answer

$$2ab\left(2a+3b\right)$$

Answer

$$2ab\left(2a+3b-1\right)$$

Question 2

Which of the following mush have (x-3) as a factor?

I. $$-2xy+6y$$

II. $$\left(x-3\right)^2+2xy-6y$$

III. $$\left(3-x\right)^2-2xy+6y$$

Accepted Answer

I, II and III

Answer

I and II only

Answer

I and III only

Answer

II and III only

Question 3

$$\frac{6a^2-8ab}{6a^2b}$$

Accepted Answer

$$\frac{3a-4b}{3ab}$$

Answer

$$\frac{1-8ab}{b}$$

Answer

$$\frac{6a^2-4}{3a}$$

Answer

$$\frac{3a-4b}{3b}$$

Question 4

$$\frac{3}{2-x}-\frac{3}{x-2}$$

Accepted Answer

$$\frac{6}{2-x}$$

Answer

0

Answer

$$\frac{6}{x-2}$$

Answer

$$-\frac{6}{x^2-4}$$

Question 5

If $$\frac{2h-3k}{h+2k}$$ = $$-\frac{2}{3}$$ , then k =

Accepted Answer

$$\frac{8h}{5}$$

Answer

$$\frac{4}{13h}$$

Answer

$$\frac{4h}{13}$$

Answer

$$\frac{5}{8h}$$

Question 6

Let a and b be non-zero numbers. Which of the following points lies on the graph of $$\frac{x}{a}+\frac{y}{b}=1$$ ?

Accepted Answer

(2a, -b)

Answer

(-a, b)

Answer

(-a, -b)

Answer

(a, -2b)

Question 7

Question 7.

Accepted Answer

x = 1, y = 4

Answer

x = -1, y = 0

Answer

x = 0, y = 3

Answer

x = 4, y = 1

Question 8

if 4p = 3q and 5p - 3q = 6, then q =

Accepted Answer

8

Answer

3

Answer

4

Answer

6

Question 9

Which of the following pairs of simultaneous equations has/have more than one solution?

Accepted Answer

II only

Answer

I only

Answer

I and III only

Answer

II and III only

Question 10

The price of 1 apple and 2 oranges is $11. if the price of 3 apples and the price of 5 oranges are the same, then the price of an apple is

Accepted Answer

$5

Answer

$2

Answer

$3

Answer

$8

Question 11

The length and the width of a rectangle are measured as 15 cm and 12 cm respectively correct to the nearest cm. The least possible perimeter of the rectangle is

Accepted Answer

52 cm

Answer

50 cm

Answer

53 cm

Answer

54 cm

Question 12

The area of a square is measured as 15 cm² correct to the nearest cm². Which of the following CANNOT be the actual side length of the square correct to the nearest 0.01 cm?

Accepted Answer

3.80 cm

Answer

3.85 cm

Answer

3.90 cm

Answer

3.93 cm

Question 13

The weight of a metal block is measured as 23.7 kg correct to the nearest 0.1 kg. If the metal block is melted and recast into n identical metal spheres such that the weight of each sphere is measured as 110 g correct to the nearest 10 g, the greatest possible value of n is

Accepted Answer

226

Answer

205

Answer

206

Answer

227

Question 14

The actual speed of a racing car lies between 176 km/h and 184 km/h. The relative error of the speed of the racing car is

Accepted Answer

$$\frac{1}{45}$$

Answer

$$\frac{1}{22}$$

Answer

$$\frac{2}{45}$$

Answer

$$\frac{1}{44}$$

Question 15

The height of a doll is measured as 12.5 cm correct to the nearest 0.1 cm. The percentage error of the measurement is

Accepted Answer

0.4%

Answer

0.8%

Answer

1.6%

Answer

4%

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